Aspire Digital 6930 series User Manual
Page 152
142
Chapter 4
0x22
Reset the keyboard.
LBT
Core
0x40
Test A20 line
LBT
Core
0x67
Quick initialization of all Application Processors in a multi-
processor system
LBT
Core
0x32
Compute CPU speed.
LBT
Core
0x69
Initialize the handler for SMM.
LBT
Core
0x6B
If CMOS is bad, load Custom Defaults from flash into CMOS. If
successful, reboot.
LBT
Core
0x3C
If CMOS is valid, load chipset registers with values from
CMOS, otherwise load defaults and display Setup prompt. If
Auto Configuration is enabled, always load the chipset
registers with the Setup defaults (Rel 6.0).
LBT
Core
0x3D
Load alternate registers with CMOS values
LBT
Core
0x42
Initialize interrupt vectors 0 thru 77h
LBT
Core
0x46
Verify the ROM copyright notice
LBT
Core
0x45
Initialize all motherboard devices.
LBT
Core
0x49
1. Size the PCI bus topology and set bridge bus numbers.
2. Set the system max bus number.
3. Write a 0 to the command register of every PCI device.
4. Write a 0 to all 6 base registers in every PCI device.
5. Write a -1 to the status register of every PC
LBT
Core
0xC6
Initialize note dock
LBT
Core
0xC5
PnPnd dual CMOS (optional)
LBT
Core
0x48
Verify that the equipment specified in the CMOS matches the
hardware currently installed. If the monitor type is set to 00
then a video ROM must exist. If the monitor type is 1 or 2 set
the video switch to CGA. If monitor type 3, set the video switch
to m
LBT
Core
0xD1
Initialize BIOS stack
LBT
Core
0xD3
Setup E820h and WAD memory map
LBT
Core
0x24
Set segment-register addressability to 4 GB
LBT
Core
0xCC
Redirect Int 10h to enable target board to use a remote serial
video (PICO BIOS).
LBT
Core
0x8A
Initialize Extended BIOS Data Area and initialize the mouse.
LBT
Core
0x9D
Initialize Security Engine.
LBT
Core
0x55
USB Initialization
LBT
Core
0x52
Verify keyboard reset.
LBT
Core
0x54
Initialize keystroke clicker if enabled in Setup.
LBT
Core
0x76
Check status bits for keyboard-related failures. Display error
messages on the screen.
LBT
Core
0x4A
Initialize all video adapters in system
LBT
Core
0x4C
Shadow video BIOS ROM if specified by Setup, and CMOS is
valid and the previous boot was OK.
LBT
Core
0x59
Register POST Display Services, fonts, and languages with
the POST Dispatch Manager.
LBT
Core
0x57
Initialize 1394 Firewire
LBT
Core
POST
Code
Function
Phase
Component